Objective: To study the effect of psychological intervention on mental health of sentries in remote post Method:128 sentries in remote post were assessed with SCL-90 and EPQ Psychological intervention included health education focus on mental health and individual psychological help After 6 months, they were assessed with SCL-90 again to evaluate the outcome of intervention Results:Before intervention, the score of SCL-90 and N, P scores of EPQ were higher than military norm, while E score was lower than military norm (P